| Vendor | Spec | Unit | Price | Currency | Date |
| Weifang Sutong Chem | China national standards | MT | 4472.66 | USD | 20251121 |
| Shandong Zhiheng | China national standards | MT | 4938.27 | USD | 20251121 |
| Shandong Hongyang Chem | China national standards | MT | 4938.27 | USD | 20251121 |
| Shouguang ZixuChem | Industrial Grade | MT | 4513.08 | USD | 20251120 |
| Shandong Hongyang Chem | China national standards | MT | 4936.18 | USD | 20251120 |
| Weifang Longmao Chem | Industrial Grade | MT | 4513.08 | USD | 20251120 |
| Shandong Zhiheng | China national standards | MT | 4936.18 | USD | 20251120 |
| Shandong Zhiheng | China national standards | MT | 4938.48 | USD | 20251119 |
| Shouguang ZixuChem | Industrial Grade | MT | 4515.18 | USD | 20251119 |
| Weifang Longmao Chem | Industrial Grade | MT | 4515.18 | USD | 20251119 |